Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Apr. 01, 2022	Dec. 31, 2021	Apr. 01, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 713,201		$ 545,385		$ 543,918
Level One
Business Acquisition [Line Items]
Cash and due from banks		$ 217,104
Investment securities		370,658
Loans held for sale		7,951
Loans		1,629,273
Allowance for credit losses - loans		(16,599)
Premises and equipment		11,848
Federal Home Loan Bank stock		11,688
Interest receivable		7,188
Cash surrender value of life insurance		30,143
Tax asset, deferred and receivable		13,174
Other assets		41,690
Deposits		(1,930,790)
Securities sold under repurchase agreements		(1,521)
Federal Home Loan Bank advances		(160,043)
Subordinated debentures		(32,631)
Interest payable		(1,065)
Other liabilities		(42,813)
Net tangible assets acquired		155,255
Other intangibles		18,642
Goodwill		167,816
Purchase price		$ 341,713
Hoosier
Business Acquisition [Line Items]
Cash and due from banks				$ 292
Other assets				35
Other liabilities				(816)
Net tangible assets acquired				(489)
Other intangibles				2,247
Goodwill				1,467
Purchase price				$ 3,225